Crossover from Positive to Negative Magnetoresistance in a Spinel

Parker, D.R. and Green, M.A. and Bramwell, S.T. and Wills, A.S. and Gardner, J.S. and Neumann, D.A. (2004) Crossover from Positive to Negative Magnetoresistance in a Spinel. Journal of the American Chemical Society, 126 (9). pp. 2710-2711. ISSN 0002-7863. (doi:https://doi.org/10.1021/ja036965a) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1021/ja036965a

Abstract

We present a new class of colossal magnetoresistance materials based on a series of frustrated spinels. The spin glass-like compound Zn0.95Cu0.05Cr2Se4, shows a field-induced transition to a ferromagnetic, which is associated with a highly unusual negative magnetoresistance effect (MR > 80%) in low magnetic field. At higher temperatures there is an unprecedented crossover to positive magnetoresistance (MR > 50%). Copyright © 2004 American Chemical Society.

Item Type: Article
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J. Am. Chem. Soc. [Field not mapped to EPrints] AD - Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, United Kingdom [Field not mapped to EPrints] AD - Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom [Field not mapped to EPrints] AD - Brookhaven National Laboratory, Upton, NY 11973, United States [Field not mapped to EPrints] AD - NIST Center for Neutron Research, Natl. Inst. of Std. and Technology, Gaithersburg, MD 20899-8562, United States [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: chromium, copper, selenium, zinc, article, chemical analysis, correlation analysis, magnetic field, magnetism, semiconductor, temperature dependence, transport kinetics
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 15:15 UTC
Last Modified: 23 Oct 2015 11:03 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51127 (The current URI for this page, for reference purposes)
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